Riedlberger, Felix and Todisco, Stefano and Mastrorilli, Piero and Timoshkin, Alexey Y. and Seidl, Michael and Scheer, Manfred (2020) NHCs as Neutral Donors towards Polyphosphorus Complexes. CHEMISTRY-A EUROPEAN JOURNAL, 26 (69). pp. 16251-16255. ISSN 0947-6539, 1521-3765
Full text not available from this repository. (Request a copy)Abstract
The first adducts of NHCs (=N-heterocyclic carbenes) with aromatic polyphosphorus complexes are reported. The reactions of [Cp*Fe(eta(5)-P-5)] (1) (Cp*=pentamethyl-cyclopentadienyl) with IMe (=1,3,4,5-tetramethylimidazolin-2-ylidene), IMes (=1,3-bis(2,4,6-trimethylphenyl)-imidazolin-2-ylidene) and IDipp (=1,3-bis(2,6-diisopropylphenyl)-imidazolin-2-ylidene) led to the corresponding neutral adducts which can be isolated in the solid state. However, in solution, they quickly undergo a dissociative equilibrium between the adduct and 1 including the corresponding NHC. The equilibrium is influenced by the bulkiness of the NHC. [Cp '' Ta(CO)(2)(eta(4)-P-4)] (Cp ''=1,3-di-tert-butylcyclopentadienyl) reacts with IMe under P atom abstraction to give an unprecedented cyclo-P-3-containing anionic tantalum complex. DFT calculations shed light onto the energetics of the reaction pathways.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | N-HETEROCYCLIC CARBENES; PENTAPHOSPHAFERROCENE; COORDINATION; MOLECULE; LIGANDS; iron; N-heterocyclic carbenes; NMR spectroscopy; nucleophilic attack; phosphorus; tantalum |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Manfred Scheer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Mar 2021 11:22 |
| Last Modified: | 08 Mar 2021 11:22 |
| URI: | https://pred.uni-regensburg.de/id/eprint/43507 |
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